Olycom C200 Cordless Phone Compatible Battery 3.6V 1200mAh

Olycom C200 — 3.6V Ni-MH Replacement Battery

This 3.6V, 1200mAh Ni-MH battery replaces the original pack in the Olycom C200 cordless phone handset. It restores full handset operation without buying a new phone. Capacity figure is 4.32Wh as rated.

• C200 handset fit: The C200 runs a standard 3.6V Ni-MH single-cell-equivalent pack. The connector orientation, cell count, and voltage rail all match the original factory spec. No modification needed to seat the pack in the handset compartment.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a cordless phone test rig. The BMS accepted charge from the base station normally, with no cutoff or error state triggered during the first three cycles.
• First charge on NiMH cordless packs: After installing, seat the handset in the base and leave it for a full 16 hours before first use. Ni-MH cordless batteries arrive partially discharged from storage. A slow initial charge lets the cells reach rated capacity rather than plateauing short of it.

Talk time shorter than expected after fitting the new battery

Ni-MH cells do not reach rated capacity on the first charge cycle. The C200 base station charges at a trickle rate, and new cells need three to five full charge-discharge cycles before the chemistry fully activates. Talk time will increase noticeably across those early cycles. Run the handset until it signals low battery, return it to the base for a full 16-hour charge, and repeat — capacity builds each time.

Base station shows no charge indicator after fitting the replacement pack

A Ni-MH pack that has sat in storage drops below the voltage threshold some DECT base stations need before they begin charging. If the charge light does not appear within a few minutes of seating the handset, remove the handset, wait 10 seconds, and reseat it firmly. If the issue persists, check the pack voltage with a multimeter — a reading below 3.0V confirms a deep-discharge state. Most base stations will resume charging once the pack is briefly boosted to at least 3.2V using a standalone Ni-MH charger.